Pair dispersion in turbulence

G Boffetta and A Celani

Physica A: Statistical Mechanics and its Applications, 2000, vol. 280, issue 1, 1-9

Abstract: We study the statistics of pair dispersion in two-dimensional turbulence. Direct numerical simulations show that the probability distribution function (pdf) of pair separations is in agreement with the Richardson prediction. The pdf of doubling times follows dimensional scaling and shows a long tail which is the signature of close approaches between particles initially seeded with a large separation. This phenomenon is related to the formation of fronts in passive scalar advection.

Keywords: Turbulent diffusion; Turbulence simulation (search for similar items in EconPapers)
Date: 2000
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:280:y:2000:i:1:p:1-9

DOI: 10.1016/S0378-4371(99)00613-5

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